Above - HIGH temperatures for Tuesday. Frigid air North Central moving south and east to grab the entire Eastern Half of The Nation by Thursday. Below - satellite and radar picture.

Clipper storm in Midwest will bring heavy snow to Chicago and head east. Storm will bring rain to snow for Northeast....followed by the arctic plunge. Chicago could fall to -25F.......with record lows being broken in many places by Thursday. Below - expected snowfall and rainfall through Friday.

Below - animated maps showing the clipper storm and arctic air movement over next 2 days. Be safe.